[JS IR] IC improvements

- Reuse a built fragment
  - Use cache for saving built JS code

js/js.translator/testData/incremental/invalidation/crossModuleReferences/lib1/l1.kt

@@ -0,0 +1,6 @@
+fun foo() = 42
+fun bar() = 24
+
+fun baz(s: String) = s.length
+fun baz(i: Int) = i + 2
+fun baz(b: Boolean) = if (b) 10 else 1

js/js.translator/testData/incremental/invalidation/crossModuleReferences/lib1/module.info

@@ -0,0 +1,6 @@
+STEP 0:
+    dependencies: stdlib
+    dirty: l1.kt
+STEP 1..6:
+    dependencies: stdlib
+    flags: FP

js/js.translator/testData/incremental/invalidation/crossModuleReferences/lib2/l2.kt

@@ -0,0 +1,2 @@
+
+fun qux() = foo() + 2

js/js.translator/testData/incremental/invalidation/crossModuleReferences/lib2/l2.kt.1.txt

@@ -0,0 +1,2 @@
+
+fun qux() = foo() + bar()

js/js.translator/testData/incremental/invalidation/crossModuleReferences/lib2/l2.kt.2.txt

@@ -0,0 +1,2 @@
+
+fun qux() = foo() - 2

js/js.translator/testData/incremental/invalidation/crossModuleReferences/lib2/l2.kt.3.txt

@@ -0,0 +1,2 @@
+
+fun qux() = baz(2) + baz("test") + baz(true)

js/js.translator/testData/incremental/invalidation/crossModuleReferences/lib2/l2.kt.4.txt

@@ -0,0 +1,2 @@
+
+fun qux() = baz("test") + baz(true)

js/js.translator/testData/incremental/invalidation/crossModuleReferences/lib2/l2.kt.6.txt

@@ -0,0 +1,2 @@
+
+fun qux() = baz("test") + 100

js/js.translator/testData/incremental/invalidation/crossModuleReferences/lib2/module.info

@@ -0,0 +1,31 @@
+STEP 0:
+    dependencies: stdlib, lib1
+    dirty: l2.kt
+STEP 1:
+    dependencies: stdlib, lib1
+    modifications:
+        U : l2.kt.1.txt -> l2.kt
+    dirty: l2.kt
+STEP 2:
+    dependencies: stdlib, lib1
+    modifications:
+        U : l2.kt.2.txt -> l2.kt
+    dirty: l2.kt
+STEP 3:
+    dependencies: stdlib, lib1
+    modifications:
+        U : l2.kt.3.txt -> l2.kt
+    dirty: l2.kt
+STEP 4:
+    dependencies: stdlib, lib1
+    modifications:
+        U : l2.kt.4.txt -> l2.kt
+    dirty: l2.kt
+STEP 5:
+    dependencies: stdlib, lib1
+    flags: FP
+STEP 6:
+    dependencies: stdlib, lib1
+    modifications:
+        U : l2.kt.6.txt -> l2.kt
+    dirty: l2.kt

js/js.translator/testData/incremental/invalidation/crossModuleReferences/main/m.kt

@@ -0,0 +1,12 @@
+
+fun box(stepId: Int): String {
+    when (stepId) {
+        0 -> if (qux() != 44) return "Fail"
+        1 -> if (qux() != 66) return "Fail"
+        2 -> if (qux() != 40) return "Fail"
+        3 -> if (qux() != 18) return "Fail"
+        4 -> if (qux() != 14) return "Fail"
+        else -> return "Unknown"
+    }
+    return "OK"
+}

js/js.translator/testData/incremental/invalidation/crossModuleReferences/main/m.kt.5.txt

@@ -0,0 +1,11 @@
+
+fun box(stepId: Int): String {
+    when (stepId) {
+        5 -> if (qux() != 14) return "Fail"
+        6 -> if (qux() != 104) return "Fail"
+        else -> return "Unknown"
+    }
+    if (baz(77) != 79) return "Fail"
+    if (baz("test") != 4) return "Fail"
+    return "OK"
+}

js/js.translator/testData/incremental/invalidation/crossModuleReferences/main/module.info

@@ -0,0 +1,12 @@
+STEP 0:
+    dependencies: stdlib, lib1, lib2
+    dirty: m.kt
+STEP 1..4:
+    dependencies: stdlib, lib1, lib2
+STEP 5:
+    dependencies: stdlib, lib1, lib2
+    modifications:
+        U : m.kt.5.txt -> m.kt
+    dirty: m.kt
+STEP 6:
+    dependencies: stdlib, lib1, lib2

js/js.translator/testData/incremental/invalidation/crossModuleReferences/project.info

@@ -0,0 +1,14 @@
+MODULES: lib1, lib2, main
+
+STEP 0:
+    libs: lib1, lib2, main
+    dirty js: stdlib, lib1, lib2, main
+STEP 1..4:
+    libs: lib1, lib2, main
+    dirty js: lib1, lib2
+STEP 5:
+    libs: lib1, lib2, main
+    dirty js: lib1, main
+STEP 6:
+    libs: lib1, lib2, main
+    dirty js: lib1, lib2, main